收腹的英文：
adduct abdominal muscles ;draw in the abdomen

adduct是什么意思：
vt. 使内收

The adduct is isolated by evaporating the solvent and any low-boiling concomitants at low temperatures of the order of about-100 to -20
在-100°～-20℃的低温下，将溶剂和低沸点成分蒸发掉而分离出加合物。

abdominal是什么意思：
adj. 腹部的；有腹鳍的

Pains in the abdominal region.
腹部的疼痛。

Abdominal muscle：Any of the muscles of the front and side walls of the abdominal cavity.
腹肌:腹腔前壁及侧壁的肌肉

Contract the abdominal muscles during childbirth to ease delivery.
在胎儿出生时，收缩腹部肌肉使安逸地产出。

muscles是什么意思：
n. 肌肉，力量，实力
v. 硬挤，强行加入

The muscle bending a joint is antagonistic to the muscle straightening it.
关节的弯曲肌与伸直肌彼此牵制。

Muscles are composed primarily of voluntary muscle fibers.
肌肉主要是由随意肌纤维所组成。

Paralysis of a single limb,muscle,or muscle group.
单瘫指单一肢体、肌肉或一组肌肉的瘫痪